LTC2345HUK-18#PBF Datasheet PDF - Linear Technology

●The LTC2345HUK-18#PBF is an octal, 18bit, 200Ksps differential SoftSpan ADC with wide input common mode range in 48 pin QFN package. This 18bit, low noise 8-channel simultaneous sampling successive approximation register (SAR) ADC with differential, wide common mode range inputs. Operating from a 5V low voltage supply and using the internal reference and buffer, each channel of this SoftSpan ADC can be independently configured on a conversion by conversion basis to accept ±4.096, 0V to 4.096V, ±2.048V, or 0V to 2.048V signals. Individual channels may also be disabled to increase throughput on the remaining channels. The IC"s analogue inputs allow the ADC to directly digitize a variety of signals, simplifying signal chain design. It is used in programmable logic controllers, industrial process control and high speed data acquisition.

● Eight simultaneous sampling channels

● Operating temperature range from -40°C to 125°C, resolution of 18bit, no missing codes

● ±5LSB INL (maximum, ±4.096V range)

● 91.8dB single conversion SNR (typical), -113dB THD (typical) at fIN = 2KHz

● 102dB CMRR (typical) at fIN = 200Hz, rail to rail input overdrive tolerance

● Integrated reference and buffer (4.096V)

● SPI CMOS (1.8V to 5V) and LVDS serial I/O

● Internal conversion clock, no cycle latency

● 81mW power dissipation (typical)